/Engine/Plugins/VirtualProduction/DMX/DMXModularFeatures/Source/DMXFixtureActorInterface/Public/DMXMVRFixtureActorInterface.h
Note the Actor that implements this is required to have exactly one DMXComponent subobject. It is the DMX Component that will write its MVR UUID to the Actor's MetaData and make the Actor identified as an MVR Actor.
class UDMXMVRFixtureActorInterface : public [UInterface](API\Runtime\CoreUObject\UObject\UInterface)